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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="action_binder_v1">
<copyright>
Copyright © 2015-2017 Quentin “Sardem FF7” Glidic, 2023 Anna "navi" Figueiredo Gomes
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that copyright notice and this permission
notice appear in supporting documentation, and that the name of
the copyright holders not be used in advertising or publicity
pertaining to distribution of the software without specific,
written prior permission. The copyright holders make no
representations about the suitability of this software for any
purpose. It is provided "as is" without express or implied
warranty.
THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
</copyright>
<interface name="ext_action_binder_v1" version="1">
<description summary="action binder">
This interface is designed to allow any application to bind
an action.
An action is an arbitrary couple of a namespace and a name describing the
wanted behaviour. These two strings are not meant to be user-visible.
Some namespaces are well-known and shared by applications while each
application can have its own namespaces for internal actions.
It is possible to have the same action in several namespaces, e.g. to
allow application-specific bindings in addition to global actions.
It is left to the compositor to determine which client will get events.
The choice can be based on policy, heuristic, user configuration, or any
other mechanism that may be relevant.
Here are some examples of dispatching choice: all applications, last
focused, user-defined preference order, latest fullscreened application.
This interface is exposed as global
</description>
<request name="destroy" type="destructor">
<description summary="unbind the actions">
The client no longer wants to receive events for any action.
</description>
</request>
<request name="create_binding">
<description summary="create a binding"/>
<arg name="binding" type="new_id" interface="ext_action_binding_v1" summary="the new binding" />
</request>
</interface>
<interface name="ext_action_binding_v1" version="1">
<request name="destroy" type="destructor">
<description summary="unbind the actions">
The client no longer wants to receive events for this binding.
</description>
</request>
<request name="set_name">
<description summary="sets the namespace:name of a binding">
Sets the namespace:name of the binding. This a kind of action.
</description>
<arg name="action_namespace" type="string" summary="the action namespace" />
<arg name="action_name" type="string" summary="the action name" />
</request>
<request name="set_description">
<description summary="sets the human-readable description of a binding">
This description may be used by the compositor to render a ui for bindings.
</description>
<arg name="description" type="string" summary="a human-readable description of what the binding does" />
</request>
<request name="set_trigger_hint">
<description summary="sets the machine-readable trigger of a binding">
The trigger is a suggestion to the compositor, and the action should not rely
to being set to that specific trigger.
The client does not know which trigger was actually set, but when a binding is
bound, it recieves from the compositor a human readable string describing the trigger,
if any, so it could show it in a ui.
</description>
<arg name="preferred_trigger" type="string" summary="a trigger that the client would like to trigger the action" />
</request>
<request name="bind">
<description summary="binds an action">
Bind an action to the object. this is a one-time request.
After calling bind, either the "bound" or "rejected" event is sent.
Subsequent calls to bind should be ignored.
If no action has been set for the binding, the error "invalid_action" is raised.
</description>
</request>
<enum name="error">
<entry name="invalid_action" value="0" summary="the binding has no action set"/>
</enum>
<event name="bound">
<description summary="the compositor bound the binding to an action">
After the compositor processes a bind request, if the action was
bound to this binding, it calls this event to notify the client of the result.
</description>
<arg name="trigger" type="string" summary="human-readable string describing the trigger for the action" />
</event>
<event name="rejected">
<description summary="the compositor rejected the binding">
After the compositor processes a bind request, if the binding was
rejected, it calls this event to notify the client of the result.
This event may be sent after a binding was bound, should the compositor
want to remove the binding.
After this event, the binding is destroyed and can't be used anymore.
</description>
</event>
<enum name="trigger_type">
<description summary="type of binding triggered">
Depending on the user configuration, an action can be either one-off or
sustained. The client must handle all the three event types and either make
sense of them or ignore them properly.
</description>
<entry name="one_shot" value="0"
summary="a one shot action was triggered" />
<entry name="pressed" value="1"
summary="a sustained action was started" />
<entry name="released" value="2"
summary="a sustained action ended" />
</enum>
<event name="triggered">
<description summary="the action triggered">
This event is sent when actions are triggered.
If a binding would trigger both triggered and started events, the
started event must be sent first.
</description>
<arg name="type" type="uint" enum="trigger_type" summary="the type of trigger that was sent" />
</event>
</interface>
</protocol>
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